Potato Allergy Insights: Symptoms, Treatment, and Prevention

A potato allergy? It may sound unbelievable, but the reality is that potato allergies exist. Whether you’re uncertain about a potential potato allergy or you’ve recently received a diagnosis, this guide is designed to provide you with the essential insights you need.

We’ll journey through the origins, symptoms, treatment options, and preventive strategies, offering the clarity you’re seeking regarding this allergy.

Whether you’re in the process of understanding your condition or searching for ways to manage it effectively, our exploration aims to equip you with the knowledge necessary to navigate the complexities of a potato allergy.

Brown table with a stack of red and russet potatoes with a white background.

Can you be allergic to potatoes?

Yes, it is possible to be allergic to potatoes. Potato allergies are uncommon but do occur. The primary culprit for this food allergy is a protein called patatin. Symptoms may include skin rashes, digestive issues, sneezing, a runny nose, and, in severe instances, anaphylaxis.

Defining a Potato Allergy

Potato allergy definition infographic: The immune system mistakenly identifies potato proteins as a threat and releases histamine into the bloodstream. This histamine triggers an allergic response in the form of allergy symptoms.

A potato allergy occurs when ingesting potatoes triggers an immune system response. In this scenario, the immune system mistakenly identifies potato proteins as a threat and initiates a defensive potato histamine reaction to eliminate the perceived “threat.” Consequently, allergy symptoms manifest as a result of this immune system activity.

Potato allergies are different from potato intolerances. A potato intolerance is a condition where your body does not agree with, or cannot digest certain components of the potato. An intolerance does not involve the immune system. 

Are sweet potato allergies the same as potato allergies?

A pile of many red sweet potatoes.

No, sweet potato allergies and potato allergies are generally considered distinct, as they involve different plant species.

Sweet potatoes (Ipomoea batatas) belong to a different botanical family than regular potatoes (Solanum tuberosum). The proteins present in sweet potatoes are different from those in regular potatoes.

However, even though these are two distinct plants with different proteins present, there is still a possibility of cross-reactivity (similar proteins in both) between the two plants.

Potato Allergy Causes and Risk Factors

Potato allergy causes and risk factors infographic. The precise cause of potato allergies is not completely understood by science. The following outlines some potential causes and factors associated with potato allergies: Age, Cross-Reactivity, Digestion Ability, Existing Allergies, Gastrointestinal Permeability, Genetic Predisposition, Protein Sensitivity

The exact cause of food allergies, including potato allergies, is not fully understood, but it is believed to involve a combination of genetic and environmental factors. Here are some potential causes and factors associated with potato allergies:


A mother, father, and son laughing outside in tall grass.

Your age can be a factor in developing potato allergies. Children are more likely to develop allergies to certain foods, including potatoes. Delayed introduction of certain foods in infancy has been suggested as a potential risk factor for food allergies. 

However, some people may outgrow their potato allergy as they get older. Or the opposite may happen, and you could develop a new allergy to potatoes as you age. 


If you are allergic to one member of the nightshade family, you may be at an increased risk of developing an allergy to another. Potatoes belong to the nightshade family, which includes tomatoes, peppers, and eggplants.

Cross-reactivity can make it challenging to identify the specific trigger of an allergic reaction.

Digestion Ability

a woman with her hand slightly pressing on her stomach.

The way potatoes are processed or cooked can affect their allergenicity. For instance, some individuals may react to raw or undercooked potatoes but not experience the same allergic response when potatoes are thoroughly cooked.

Existing Allergies

If you have existing allergies to foods or environmental allergens, you may be more susceptible to developing a potato allergy. Individuals with a hypersensitive immune system are at a higher risk of developing allergies to various substances.

Gastrointestinal Permeability

Increased permeability of the gastrointestinal tract may allow proteins from potatoes to enter the bloodstream, triggering an immune response. This permeability can be influenced by factors such as gut health and the integrity of the intestinal lining.

Genetic Predisposition

A puzzle that is not complete but is an image of the human genes

One significant risk factor for potato allergies is a genetic allergy predisposition. If you have a family history of potato allergies, your chances of developing a potato allergy may be higher.

Potato Protein Sensitivity

Proteins in potatoes, such as patatin, lectins, and protease inhibitors, are the likely culprits for allergic reactions. The immune system can mistakenly identify these proteins as harmful substances, leading to an allergic response.

Potato Allergy Symptoms in Adults

Potato allergy symptoms in adults infographic. The symptoms of a potato allergy may differ from person to person. The following is a list of some possible manifestations: Abdominal pain, Diarrhea, Eczema , Itchy mouth or throat, Nausea, Runny or stuffy nose, Shortness of breath, Skin rash, Swelling of the face, lips, tongue, or throat, Vomiting, Watery or itchy eyes There is a chance for potato allergies to cause anaphylaxis. Anaphylaxis is a severe and potentially life-threatening allergic reaction, immediate medical attention is crucial if anaphylaxis occurs.

Potato allergy symptoms can vary from person to person, but here is a list of potential symptoms:

  • Abdominal pain
  • Diarrhea
  • Eczema 
  • Itchy mouth or throat
  • Nausea
  • Runny or stuffy nose
  • Shortness of breath
  • Skin rash
  • Swelling of the face, lips, tongue, or throat
  • Vomiting
  • Watery or itchy eyes

There is a chance for potato allergies to cause anaphylaxis. Anaphylaxis is a severe and potentially life-threatening allergic reaction that can affect multiple organ systems.

Symptoms may include swelling of the throat, a drop in blood pressure, and loss of consciousness. Immediate medical attention is crucial if anaphylaxis occurs.

Potato Allergy Tests

A doctor or nurse performing a physical on their patient.

Testing for a potential potato allergy should be done by a licensed allergist or physician, and usually involves a complete review of your medical history, as well as a physical exam. Here are the common tests used to diagnose an allergy to potatoes: 

Skin Prick Test

Skin Prick Test Process Infographic. The skin prick test (SPT) is a frequently used diagnostic method to detect allergies. This procedure involves the following steps: Application of allergen extract, a small amount of suspected allergen extract is placed on the surface of the skin. Need Prick, a tiny needle is used to poke the first later of skin where the extract was placed. Monitor for reactions, the final step is to monitor your skin for any sort of allergic reaction. Reactions may include itching, swelling, or redness.

The Skin Prick Test (SPT) is a commonly employed diagnostic procedure for identifying allergies, including those associated with potatoes. This method entails the following steps:

Application of Potato Extract: The process commences with the precise application of potato extract or protein to the skin’s surface. Typically, this is performed on the forearm or the patient’s back. This step serves as the introduction of the allergenic substance.

Needle Prick: A tiny needle is employed to introduce the potato extract under the epidermal (outer) layer of the skin. This needle prick facilitates the interaction between the allergen and the immune system residing beneath the skin.

Monitoring for Allergic Reactions: A vigilant observation period follows, typically lasting 15 to 20 minutes. During this time, the medical practitioner assesses the site for any localized skin reactions.

Indications of a positive response often include erythema (redness), edema (swelling), and pruritus (itching) specifically localized to the area where the potato extract was introduced.

The appearance of these characteristic skin manifestations serves as an important diagnostic indicator, suggesting an allergic sensitivity to potatoes. The skin prick test approach ensures a professional and accurate evaluation of potato allergies.

Potato IgE Blood Test

A lab technician sorting through different lab tests for analysis.

 A blood test, such as a specific IgE (immunoglobulin E) test, can also be performed to measure the level of potato-specific antibodies in your blood. Elevated levels of potato-specific IgE antibodies can indicate an allergy to potatoes.

Oral Food Challenge

The Oral Food Challenge is a methodical process carried out under medical supervision when there’s uncertainty about a food allergy diagnosis. It involves consuming a small amount of the suspected allergen while being closely watched for any allergic reactions.

If there’s no reaction to the initial dose, they may gradually increase it to confirm the diagnosis. While this test is highly accurate, it also carries the risk of severe reactions like anaphylaxis.

Elimination Diet

Three potatoes on a counter with a red "x" over the front, signifying no potatoes.

When you suspect a potato allergy, an elimination diet may be recommended. This means you steer clear of anything potato-related for a specific duration, often around 2 weeks. If your allergy symptoms vanish during this time, your doctor will guide you through a process of gradually reintroducing potatoes to see if the symptoms come back.

Patch Test

A patch test is less common for potato allergies but may be used to diagnose potato contact dermatitis, which is an allergic reaction to the skin upon contact with potatoes (not consumption). A patch containing potato extract is applied to your skin by an allergist, for roughly two days, and then checked for any skin reactions by an allergist.

Potato Allergy Treatment

stethoscope resting on a work calendar for a doctor.

The treatment options for potato allergy symptoms are currently limited to the use of antihistamines, and the use of epinephrine (EPIPEN®) in emergencies. Knowing your treatment options is a crucial part of the broad strategy for managing and mitigating allergic responses. 


image of the many over-the-counter allergy medications available in a store.

Over-the-counter (OTC) antihistamines can help with treating non-severe allergy symptoms caused by a potato allergy. A couple of specific antihistamines commonly used to treat acute potato allergy symptoms are diphenhydramine (Benedryl®) and Cetirizine (Zyrtec®). Find the food allergy antihistamine that works best for you.  

Emergency Epinephrine

image of two EpiPen auto-injectors that were prescribed for allergies.

Epinephrine also known as adrenaline or an EPIPEN®, is a medication that is injected to counteract severe allergic reactions or anaphylaxis. Here is how epinephrine works when administered: 

Rapid Symptom Relief: Epinephrine acts quickly to alleviate the most severe symptoms of an allergic reaction. It works by narrowing blood vessels, which helps to increase blood pressure and alleviate the swelling associated with anaphylaxis.

Bronchodilation: Epinephrine also relaxes the muscles of the airways, facilitating easier breathing in cases where respiratory symptoms are present.

Counteracting Shock: In severe cases of anaphylaxis, individuals may go into shock due to a sudden drop in blood pressure. Epinephrine helps counteract this by increasing blood flow to vital organs.

Stabilizing the Heart: Anaphylaxis can sometimes affect the heart, leading to a rapid or irregular heartbeat. Epinephrine can help stabilize the heart rate.

If you have been prescribed epinephrine, ensure you follow your doctor’s protocol about administration and medical care.

You should be trained on how to use the injector, and medical professionals advise you to seek medical care immediately after administering epinephrine. 


Preventing or managing allergy symptoms may be possible, however, it is important to note that allergy triggers and reactions can vary from person to person. Here are some tips that may help you manage or prevent potato allergic reactions: 

Consult with a Healthcare Professional

Two female doctors holding up stethoscopes.

Consult with a healthcare professional, such as an allergist or immunologist first. You will want to get allergy tested (if you have not already done so) to confirm your allergy.

Additionally, your healthcare team will be the best place to get all your questions answered and receive personalized advice for your specific situation.

Avoid Potatoes

The cornerstone of potato allergy management lies in allergen avoidance. This involves meticulous scrutiny of food labels, steering clear of potato-based products, and adopting an informed approach to meal planning.

Inform Others About Your Allergy

Two male friends talking to each other while drinking coffee.

Make sure that friends, family, and even your waiter are aware of your potato allergy. The more people you inform, the more aware others will be about the foods they may prepare for you. This can help prevent accidental exposure from ingredient use and/or potential cross-contamination during food prep.

Use Potato Alternative Ingredients

A head of cauliflower outside of a pot, sitting on a green kitchen towel.

Look for alternative ingredients in recipes that usually include potatoes. There are many substitutes available for potatoes in cooking, such as sweet potatoes, cauliflower, or other root vegetables. 

Proceed with caution as some plants may be related to potatoes and still cause an allergic reaction. Be sure to discuss all potential alternatives with your medical provider if you are unsure about potential allergic reactions. 

Have an Emergency Preparedness Plan

A paper heart over an EKG heartbeat, with an orange background.

In case of accidental exposure, it’s important to have an emergency action plan. This may include carrying an epinephrine auto-injector (EPIPEN®) if prescribed by your healthcare provider. Here are some questions to ask yourself when creating your allergy action plan:

  • Do my friends and family know allergic reaction symptoms?
  • Are those close to me trained on how to use an EpiPen?
  • Should I wear an allergy bracelet to inform others if I become unconscious? 
  • Where should I keep my epinephrine auto-injector?
  • Who should be informed about my allergy and the emergency plan?

These questions are to get the ideas flowing about your specific plan requirements. Of course, you will modify as you see fit for your specific situation. Regularly review and update the allergy emergency plan as needed.


Potato allergies are a real and potentially serious condition. Understanding the causes, recognizing the symptoms, and knowing how to manage and treat this allergy is crucial for individuals who are affected by it.

What has been your experience with potato allergies or are you thinking you might have a potato intolerance?

I would love to hear your story or any answered questions. Send me an email at chris@allergypreventions.com